[Resource Topic] 2022/1054: SIDH with masked torsion point images

Resource Public-key cryptography
#1

Welcome to the resource topic for 2022/1054

Title:
SIDH with masked torsion point images

Authors: Tako Boris Fouotsa

Abstract:

We propose a countermeasure to the Castryck-Decru attack on SIDH. The attack heavily relies on the images of torsion points. The main input to our countermeasure consists in masking the torsion point images in SIDH in a way they are not exploitable in the attack, but can be used to complete the key exchange. This comes with a change in the form the field characteristic and a considerable increase in the parameter sizes.

ePrint: https://eprint.iacr.org/2022/1054

See all topics related to this paper.

Feel free to post resources that are related to this paper below.

Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.

For more information, see the rules for Resource Topics .

#2

Talk by T.Moriya and TB.Fouotsa at the isogeny days in Leuven.

1 Like
#3

Slides of a talk given at IRMAR Rennes by the author.

2 Likes